June 2016

Dams

By |2017-01-17T11:12:05+02:00June 30th, 2016|Notes, O Level Science Notes, Ordinary Level Notes|

An arch shaped dam wall. Image credit MediaWiki

An arch shaped dam wall. Image credit MediaWiki ZIMSEC O Level Combined Science Notes: Dams
  • Dams usually fail due to lack of stability rather than lack of strength
  • The sideways thrust of dammed water can topple the wall
  • This thrust varies from when […]

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July 2015

The construction of dams for multiple purposes

By |2017-01-17T11:20:28+02:00July 9th, 2015|Notes, O Level Geography, Ordinary Level Notes, River Processes|

Lake Kariba. Image credit newsday.co.zw

Lake Kariba. Image credit newsday.co.zw ZIMSEC O Level Geography Notes: River Processes: The construction of dams for Multiple purposes
  • a barrier constructed to hold back water and raise its level, forming a reservoir.
  • Daming involves the building across a river to hold the water back.
  • Strictly speaking the […]

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